243865338 has 8 divisors (see below), whose sum is σ = 487730688. Its totient is φ = 81288444.

The previous prime is 243865331. The next prime is 243865339. The reversal of 243865338 is 833568342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

243865338 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 243865338.

It is not an unprimeable number, because it can be changed into a prime (243865331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20322106 + ... + 20322117.

It is an arithmetic number, because the mean of its divisors is an integer number (60966336).

Almost surely, 2^243865338 is an apocalyptic number.

243865338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243865338 is a wasteful number, since it uses less digits than its factorization.

243865338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40644228.

The product of its digits is 414720, while the sum is 42.

The square root of 243865338 is about 15616.1883313439. The cubic root of 243865338 is about 624.7650000778.

It can be divided in two parts, 2438 and 65338, that added together give a palindrome (67776).

The spelling of 243865338 in words is "two hundred forty-three million, eight hundred sixty-five thousand, three hundred thirty-eight".